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Compared 750 IACE norms against EU Official Journal harmonised standards list (SummaryListForLegislation, generated 30.03.2026): - 912 norms correctly matched (EN/EN ISO prefix normalized) - 300 norms marked as Withdrawn (no longer in EU OJ) - 0 missing (all EU-listed norms already present) NormReference struct extended with: - Withdrawn bool (true = no longer gives presumption of conformity) - ValidUntil string (end of legal effect date) - ReplacedBy string (successor norm if applicable) Source: EU Commission Implementing Decision 2023/1586 + amendments. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>